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path: root/drivers/gpu/drm/tiny/gm12u320.c
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Diffstat (limited to 'drivers/gpu/drm/tiny/gm12u320.c')
-rw-r--r--drivers/gpu/drm/tiny/gm12u320.c68
1 files changed, 35 insertions, 33 deletions
diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c
index cc397671f689..33f65f4626e5 100644
--- a/drivers/gpu/drm/tiny/gm12u320.c
+++ b/drivers/gpu/drm/tiny/gm12u320.c
@@ -45,7 +45,7 @@ MODULE_PARM_DESC(eco_mode, "Turn on Eco mode (less bright, more silent)");
#define GM12U320_BLOCK_COUNT 20
#define GM12U320_ERR(fmt, ...) \
- DRM_DEV_ERROR(&gm12u320->udev->dev, fmt, ##__VA_ARGS__)
+ DRM_DEV_ERROR(gm12u320->dev.dev, fmt, ##__VA_ARGS__)
#define MISC_RCV_EPT 1
#define DATA_RCV_EPT 2
@@ -85,7 +85,6 @@ struct gm12u320_device {
struct drm_device dev;
struct drm_simple_display_pipe pipe;
struct drm_connector conn;
- struct usb_device *udev;
unsigned char *cmd_buf;
unsigned char *data_buf[GM12U320_BLOCK_COUNT];
struct {
@@ -155,6 +154,11 @@ static const char data_block_footer[DATA_BLOCK_FOOTER_SIZE] = {
0x80, 0x00, 0x00, 0x4f
};
+static inline struct usb_device *gm12u320_to_usb_device(struct gm12u320_device *gm12u320)
+{
+ return interface_to_usbdev(to_usb_interface(gm12u320->dev.dev));
+}
+
static int gm12u320_usb_alloc(struct gm12u320_device *gm12u320)
{
int i, block_size;
@@ -191,6 +195,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
u8 req_a, u8 req_b,
u8 arg_a, u8 arg_b, u8 arg_c, u8 arg_d)
{
+ struct usb_device *udev = gm12u320_to_usb_device(gm12u320);
int ret, len;
memcpy(gm12u320->cmd_buf, &cmd_misc, CMD_SIZE);
@@ -202,8 +207,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
gm12u320->cmd_buf[25] = arg_d;
/* Send request */
- ret = usb_bulk_msg(gm12u320->udev,
- usb_sndbulkpipe(gm12u320->udev, MISC_SND_EPT),
+ ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, MISC_SND_EPT),
gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
if (ret || len != CMD_SIZE) {
GM12U320_ERR("Misc. req. error %d\n", ret);
@@ -211,8 +215,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
}
/* Read value */
- ret = usb_bulk_msg(gm12u320->udev,
- usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
+ ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, MISC_RCV_EPT),
gm12u320->cmd_buf, MISC_VALUE_SIZE, &len,
DATA_TIMEOUT);
if (ret || len != MISC_VALUE_SIZE) {
@@ -222,8 +225,7 @@ static int gm12u320_misc_request(struct gm12u320_device *gm12u320,
/* cmd_buf[0] now contains the read value, which we don't use */
/* Read status */
- ret = usb_bulk_msg(gm12u320->udev,
- usb_rcvbulkpipe(gm12u320->udev, MISC_RCV_EPT),
+ ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, MISC_RCV_EPT),
gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
CMD_TIMEOUT);
if (ret || len != READ_STATUS_SIZE) {
@@ -248,6 +250,7 @@ static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
{
int block, dst_offset, len, remain, ret, x1, x2, y1, y2;
struct drm_framebuffer *fb;
+ struct dma_buf_map map;
void *vaddr;
u8 *src;
@@ -262,11 +265,12 @@ static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
y1 = gm12u320->fb_update.rect.y1;
y2 = gm12u320->fb_update.rect.y2;
- vaddr = drm_gem_shmem_vmap(fb->obj[0]);
- if (IS_ERR(vaddr)) {
- GM12U320_ERR("failed to vmap fb: %ld\n", PTR_ERR(vaddr));
+ ret = drm_gem_shmem_vmap(fb->obj[0], &map);
+ if (ret) {
+ GM12U320_ERR("failed to vmap fb: %d\n", ret);
goto put_fb;
}
+ vaddr = map.vaddr; /* TODO: Use mapping abstraction properly */
if (fb->obj[0]->import_attach) {
ret = dma_buf_begin_cpu_access(
@@ -318,7 +322,7 @@ static void gm12u320_copy_fb_to_blocks(struct gm12u320_device *gm12u320)
GM12U320_ERR("dma_buf_end_cpu_access err: %d\n", ret);
}
vunmap:
- drm_gem_shmem_vunmap(fb->obj[0], vaddr);
+ drm_gem_shmem_vunmap(fb->obj[0], &map);
put_fb:
drm_framebuffer_put(fb);
gm12u320->fb_update.fb = NULL;
@@ -331,6 +335,7 @@ static void gm12u320_fb_update_work(struct work_struct *work)
struct gm12u320_device *gm12u320 =
container_of(to_delayed_work(work), struct gm12u320_device,
fb_update.work);
+ struct usb_device *udev = gm12u320_to_usb_device(gm12u320);
int block, block_size, len;
int ret = 0;
@@ -350,43 +355,41 @@ static void gm12u320_fb_update_work(struct work_struct *work)
gm12u320->cmd_buf[21] =
block | (gm12u320->fb_update.frame << 7);
- ret = usb_bulk_msg(gm12u320->udev,
- usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
- gm12u320->cmd_buf, CMD_SIZE, &len,
- CMD_TIMEOUT);
+ ret = usb_bulk_msg(udev,
+ usb_sndbulkpipe(udev, DATA_SND_EPT),
+ gm12u320->cmd_buf, CMD_SIZE, &len,
+ CMD_TIMEOUT);
if (ret || len != CMD_SIZE)
goto err;
/* Send data block to device */
- ret = usb_bulk_msg(gm12u320->udev,
- usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
- gm12u320->data_buf[block], block_size,
- &len, DATA_TIMEOUT);
+ ret = usb_bulk_msg(udev,
+ usb_sndbulkpipe(udev, DATA_SND_EPT),
+ gm12u320->data_buf[block], block_size,
+ &len, DATA_TIMEOUT);
if (ret || len != block_size)
goto err;
/* Read status */
- ret = usb_bulk_msg(gm12u320->udev,
- usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
- gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
- CMD_TIMEOUT);
+ ret = usb_bulk_msg(udev,
+ usb_rcvbulkpipe(udev, DATA_RCV_EPT),
+ gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+ CMD_TIMEOUT);
if (ret || len != READ_STATUS_SIZE)
goto err;
}
/* Send draw command to device */
memcpy(gm12u320->cmd_buf, cmd_draw, CMD_SIZE);
- ret = usb_bulk_msg(gm12u320->udev,
- usb_sndbulkpipe(gm12u320->udev, DATA_SND_EPT),
- gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
+ ret = usb_bulk_msg(udev, usb_sndbulkpipe(udev, DATA_SND_EPT),
+ gm12u320->cmd_buf, CMD_SIZE, &len, CMD_TIMEOUT);
if (ret || len != CMD_SIZE)
goto err;
/* Read status */
- ret = usb_bulk_msg(gm12u320->udev,
- usb_rcvbulkpipe(gm12u320->udev, DATA_RCV_EPT),
- gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
- gm12u320->fb_update.draw_status_timeout);
+ ret = usb_bulk_msg(udev, usb_rcvbulkpipe(udev, DATA_RCV_EPT),
+ gm12u320->cmd_buf, READ_STATUS_SIZE, &len,
+ gm12u320->fb_update.draw_status_timeout);
if (ret || len != READ_STATUS_SIZE)
goto err;
@@ -600,7 +603,7 @@ static const uint64_t gm12u320_pipe_modifiers[] = {
DEFINE_DRM_GEM_FOPS(gm12u320_fops);
-static struct drm_driver gm12u320_drm_driver = {
+static const struct drm_driver gm12u320_drm_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
.name = DRIVER_NAME,
@@ -638,7 +641,6 @@ static int gm12u320_usb_probe(struct usb_interface *interface,
if (IS_ERR(gm12u320))
return PTR_ERR(gm12u320);
- gm12u320->udev = interface_to_usbdev(interface);
INIT_DELAYED_WORK(&gm12u320->fb_update.work, gm12u320_fb_update_work);
mutex_init(&gm12u320->fb_update.lock);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.